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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Assertion: Only a small amount of HCl is required in the reduction of nitro compounds with iron scrap and HCl in the presence of steam. Reason: FeClX2 formed gets hydrolysed to release HCl during the

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प्रश्न

Assertion: Only a small amount of \[\ce{HCl}\] is required in the reduction of nitro compounds with iron scrap and \[\ce{HCl}\] in the presence of steam.

Reason: \[\ce{FeCl2}\] formed gets hydrolysed to release \[\ce{HCl}\] during the reaction.

विकल्प

  • Both assertion and reason are wrong.

  • Both assertion and reason are correct statements but reason is not correct explanation of assertion.

  • Assertion is correct statement but reason is wrong statement.

  • Both assertion and reason are correct statements and reason is correct explanation of assertion.

  • Assertion is wrong statement but reason is correct statement.

MCQ
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उत्तर

Both assertion and reason are correct statements and reason is correct explanation of assertion.

Explanation:

\[\ce{Fe + 2HCl ->FeCl2 + 2[H] FeCl2 + H2O(g) -> FeO + 2HCl}\]

The nascent hydrogen formed act as is reducing agent for the reduction of nitro compounds.

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अध्याय 13: Amines - Multiple Choice Questions (Type - I) [पृष्ठ १९२]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 13 Amines
Multiple Choice Questions (Type - I) | Q 72 | पृष्ठ १९२

संबंधित प्रश्न

Give the structures of A, B and C in the following reactions :


Give the structure of A, B and C in the following reaction:

\[\ce{CH3CH2I ->[NaCN] A ->[OH-][Partial hydrolysis] B ->[NaOH + Br2] C}\]


Arrange the following in the increasing order of their pKvalues:

C6H5NH2, C2H5NH2, C6H5NHCH3


Give the structures of A, B and C in the following reactions :


 Write structures of compounds A and B in each of the following reactions:


Answer the following

Explain Gabriel phthalimide synthesis.


What is the molar mass of the amine formed when acetamide undergoes Hofmann bromamide degradation?


Given below are two statements labelled as Assertion (A) and Reason (R).

Assertion (A): Alkyl halides are insoluble in water.

Reason (R): Alkyl halides have halogen attached to sp3 hybrid carbon.

Select the most appropriate answer from the options given below:


Amongst the given set of reactants, the most appropriate for preparing 2° amine is ______.


Which of the following compounds is the weakest Brönsted base?


Identify A and B in the following reaction.


Write following conversions:

acetanilide `->` p-nitroaniline


Ethylamine can be prepared by the action of bromine and caustic potash on which compound?


Which of the following amines can be prepared by Gabriel phthalimide reaction?


  1. Phenyl methenamine
  2. N, N - Dimethylaniline
  3. N - Methyl aniline
  4. Benzenamine

Choose the correct order of the basic nature of the above amines.


Identify the compo ds A and B in the following reactions:

\[\ce{A ->[Nitrating mixture] B ->[(i) Sn/cone. HCI][(ii) NaOH] Aniline}\]


Write a short note on Ammonolysis.


Assertion: Amimonolysis of alkyl halides involves the reaction between alkyl halides and alcoholic ammonia.

Reason: Ammonolysis of alkyl halides produces secondary amines only.


Write short notes on the following:

Ammonolysis 


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